*** The latkes can be made start to finish and then frozen to be reheated later. Freeze them flat, not overlapping, on a tray for about 30 minutes, and then transfer to a ziplock bag for storage. When ready to serve, preheat the oven to 500. Remove them from the freezer (they don't have to be thawed) and bake them on a screen or wire rack until hot and crispy, flipping once in the middle of cooking, about 5-10 minutes per side.